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INSTRUCTION MANUAL
FOR
OVERCURRENT RELAYS
BE1-50/51B-219 AND BE1-50/51B-226
Publication: 9 2520 00 981Revision: D 12/2000www .
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BE1-50/51B-219/226 - Introduction i
W A R N I N G !To avoid personal injury or equipment damage, only qualifiedpersonnel should perform the procedures presented in this manual.
INTRODUCTION
This manual provides information concerning the operation and installation of the BE1-50/51B-219 andBE1-50/51B-226 Overcurrent Relays. To accomplish this, the following is provided.
2 Specifications
2 Functional description
2 Mounting information
2 Setting procedure/example
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ii BE1-50/51B-219/226 - Introduction
CONFIDENTIAL INFORMATION
OF BASLER ELECTRIC COMPANY, HIGHLAND, IL. IT IS LOANED FORCONFIDENTIAL USE, SUBJECT TO RETURN ON REQUEST, AND WITH THE MUTUALUNDERSTANDING THAT IT WILL NOT BE USED IN ANY MANNER DETRIMENTAL TOTHE INTEREST OF BASLER ELECTRIC COMPANY.
First Printing: June 1996
Printed in USA
© 1996 - 2000, Basler Electric Co., Highland, IL 62249
December 2000
It is not the intention of this manual to cover all details and variations in equipment, nor does thismanual provide data for every possible contingency regarding installation or operation. Theavailability and design of all features and options are subject to modification without notice.Should further information be required, contact Basler Electric Company, Highland, Illinois.
BASLER ELECTRICROUTE 143, BOX 269
HIGHLAND, IL 62249 USAhttp://www.basler.com, [email protected]
PHONE 618-654-2341 FAX 618-654-2351
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BE1-50/51B-219/226 - Introduction iii
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SECTION 1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . 1-1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Advantages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2Characteristic Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
SECTION 2 HUMAN-MACHINE INTERFACE . . . . . . . . . . . . . . . . . . . 2-1
SECTION 3 FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . 3-1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Sensing Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Instantaneous Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Time Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Microprocessor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Power-Off Sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
SECTION 4 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Dielectric Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Factory Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1Application Coordination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
AC Input Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4DC Control Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
SECTION 5 TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Dielectric Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Operational Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Test Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1Pickup and Timing Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Target Operational Test Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2Test Procedure, Model BE1-50/51B-219 (Five Ampere Sensing Input) . . . . . . . . 5-3Test Procedure, Model BE1-50/51B-226 (One Ampere Sensing Input) . . . . . . . . 5-5
Setting the Relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8Periodic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8Periodic Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
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iv BE1-50/51B-219/226 - Introduction
CONTENTS - Continued
SECTION 6 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1In-House Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1Periodic Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1Periodic Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
SECTION 7 MANUAL CHANGE INFORMATION . . . . . . . . . . . . . . . . . 7-1
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BE1-50/51B-219/226 - General Information 1-1
SECTION 1 • GENERAL INFORMATION
DESCRIPTIONBE1-50/51B-219 and BE1-50/51B-226 Overcurrent Relays are direct replacements for Westinghouse/ABBtype CO Overcurrent Relays. Specific relays by catalog number are shown in Table 1-1. To replace anexisting Westinghouse/ABB type CO Overcurrent Relay (hereinafter referred to as ABB relay), perform thefollowing steps.
& Select the desired relay settings on your new BE1-50/51B-219/226 relay.& Remove the existing ABB relay cradle.& Insert the new BE1-50/51B-219/226 relay cradle.& Close the knife-blade switches.& Install the new Basler Electric cover and secure with the captive thumb nut.
BE1-50/51B-219/226 Overcurrent Relays are self-powered, microprocessor based, non-directional phaseor ground relays that monitor the magnitude of a single phase ac current to provide accurate instantaneousand time overcurrent protection for 50 hertz or 60 hertz power systems. One model offers fifteen populartime characteristics, a wide range of pickup settings, and field selectable instantaneous or integrating reset.
Table 1-1. ABB Relays Suitable For Direct Replacement
ABB Catalog Number Curve Type
CO-2*11*1N Short Time
CO-5*11*1N Long Time
CO-6*11*1N Definite
CO-7*11*1N Moderately Inverse
CO-8*11*1N Inverse
CO-9*11*1N Very Inverse
CO-11*11*1N Extremely Inverse
NOTE: * = Any character covering all pickup ranges, instantaneous,non-instantaneous, and 50 hertz or 60 hertz models.
APPLICATIONBE1-50/51B-219/226 Overcurrent Relays, with a wide range of pickup settings and front panel selectabletime characteristics, are perfect for applications involving coordination with fuses, reclosers, cold load pickup,motor starting, and fixed time requirements. Also, a field selectable integrating reset function that simulatesthe disk reset of electromechanical relays or instantaneous reset to avoid ratcheting makes theBE1-50/51B-219/226 Overcurrent Relays ideal for almost every application.
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1-2 BE1-50/51B-219/226 - General Information
Features
BE1-50/51B-219/226 Overcurrent Relays have the following standard features.
& Independent time and instantaneous elements.& A secure method to manually trip the breaker at the relay front panel.& Direct reading front panel controls.& Time characteristics extend to a pickup multiple of 40.& Rugged draw-out construction.& Magnetic latching targets retain indication without power.& Built-in accuracy eliminates internal adjustments.& Minimum transient overreach.& Field selectable instantaneous or integrating reset.& Field selectable characteristic curve selection similar to either GE IAC or ABB CO curves.& Field selectable 50 or 60 hertz operation.& Field selectable 0.0 or 0.1 second delay on the instantaneous element.& One ampere and five ampere sensing input models.
Internal switches provide for selecting system operating frequencies of 50 or 60 hertz, instantaneouselement delays of 0.0 or 0.1 second, characteristic curve group selection for either ABB CO or GE IAC typecurves, and instantaneous or integrating reset characteristics. Switch location and description is providedin Section 2. Table 1-2 provides model number to nominal current sensing input information.
Table 1-2. Model Number To Nominal Current Sensing Input
Model NumberNominal Current
Sensing Input
Sensing Input Range (Amperes)
TIME Increments INST Increments
BE1-50/51B-219 5 amperes 0.5 - 15.9 0.1 1.0 - 99.0 1.0
BE1-50/51B-226 1 ampere 0.1 - 3.18 0.02 0.2 - 19.8 0.2
Advantages
BE1-50/51B-219/226 Overcurrent Relays have many advantages over other overcurrent relays. Six primaryadvantages are:
& Minimum transient overreach.& Time characteristics are defined by equations and graphs.& Field selectable time characteristics.& Very low burden extends the linear range of the CTs.& Self powered from the sensed current.& Continuous automatic calibration.
BE1-50/51B-219/226 Overcurrent Relays may be tested without removing the relay from the case. Testplugs provide a quick, easy method of testing relays without removing them from the case. This providesaccess to the external stud connections as well as to the internal circuitry. Shorting contacts are providedfor current inputs when the knife blade switches are opened or the relay chassis is removed from the relaycase.
SPECIFICATIONSBE1-50/51B-219/226 Overcurrent Relays have the following features and capabilities.
Current Sensing Input1 Ampere Unit Continuous current: 2.8 amperes. One second current: 80 amperes.
5 Ampere Unit Continuous current: 14 amperes. One second current: 400 amperes.
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BE1-50/51B-219/226 - General Information 1-3
TIME PICKUP Range Setting the TIME PICKUP to the minimum pickup (0.5 ampere), places therelay in the most sensitive state and may be used as a safety setting duringnew equipment installation.
1 Ampere Unit 0.1 to 3.18 amperes in 0.02 ampere steps.
5 Ampere Unit 0.5 to 15.9 amperes in 0.1 ampere steps.
TIME Dropout Dropout occurs at 95% of pickup value.
TIME PICKUPAccuracy The timing accuracy is the sum of +1 cycle +2%. This is over the range of
1.3 to 40 times tap. This accuracy is for a given measured multiple of tap.The measurement of the multiple of tap has an accuracy that is the sum of+2% +25 milliampere for 5 ampere units and +2% +5 milliamperes for 1ampere units.
Example: (5 ampere unit)PU Setting: 5 amperesCurrent Applied: 6.5 amperes+ Multiple Tolerance: 6.655 amperes- Multiple Tolerance: 6.345 amperesTime Curve: ETime Dial: 5.0Minimum Time Using 6.655 amperes: 46.5470 secondsMaximum Time Using 6.345 amperes: 61.3968 secondsCurve Time Using 6.5 amperes: 53.1800 seconds
TIME PICKUPAccuracy 1 Ampere Unit ±2% ±5 milliamperes at or above 0.1 ampere settings.
5 Ampere Unit ±2% ±25 milliamperes at or above 0.5 ampere settings.
Frequency Response A change of ±5 hertz from the nominal 50/60 hertz current causes lessthan 0.5% change in the current required for pickup. (The relay is notfrequency selective and functions at frequencies as low as 20 hertz.)
TIME DIAL Range1 Ampere Unit 0.0 to 9.9, in 0.1 steps.
5 Ampere Unit 0.0 to 9.9, in 0.1 steps.
INST PICKUP Range Setting the INST PICKUP to the minimum pickup (1.0 ampere), places therelay in the most sensitive state and may be used as a safety setting duringnew equipment installation.
1 Ampere Unit 0.2 to 19.8 amperes in 0.2 ampere steps.
5 Ampere Unit 1 to 99 amperes in 1 ampere steps.
INST Dropout Dropout occurs at 95% of pickup value.
INST PICKUPAccuracy1 Ampere Unit ±2% ±5 milliamperes at or above 0.2 ampere settings.5 Ampere Unit ±2% ±25 milliamperes at or above 1.0 ampere settings.
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1-4 BE1-50/51B-219/226 - General Information
Frequency Response A change of ±5 hertz from the nominal 50/60 hertz current causes lessthan 0.5% change in the current required for pickup.
INST Transient Response Less than 10% overreach with system time constants up to 40 milliseconds
Burden Burden is non-linear. (Figure 1-1 illustrates the device burden.)1 Ampere Unit At 0.1 amperes, Z = 120 ohms. At 1.0 ampere, Z = 5 ohms.
5 Ampere Unit At 0.5 amperes, Z = 4.8 ohms. At 5.0 amperes, Z = 0.2 ohms.
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BE1-50/51B-219/226 - General Information 1-5
Figure 1-1. Device Burden Characteristics
Harmonic Response Harmonic rejection is illustrated in Figure 1-2.
Figure 1-2 shows that a relay set for one ampere pickup would pickup at0.96 ampere on a current containing 40% seventh harmonic. Thiscorresponds to a ten-to-one rejection ratio. Other conditions may beevaluated in the same manner.
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1-6 BE1-50/51B-219/226 - General Information
Figure 1-2. Harmonic Rejection
INST Characteristics Instantaneous characteristic curves are similar to standardelectromechanical instantaneous units. However, the time to trip forapplications where the initial current through the relay is less than 0.4ampere (5 ampere relay) or 0.08 ampere (1 ampere relay) may be slightlylonger. This may occur on a very lightly loaded circuit or when the relay isproviding ground protection and is connected to measure neutral current.Figure 1-3 shows the instantaneous characteristic curves for maximumtime to trip.
An additional fixed delay of 0.1 second may be added with internal switchSW3-2. This delay applies to both phase and ground applications. Closingswitch SW3-2 provides an additional delay of 0.1 second. Section 2illustrates the location of SW3.
The instantaneous element in BE1-50/51B-219/226 relays may be setlower than the instantaneous element in ABB relays and still have thesame reach. This is because the BE1-50/51B-219/226 instantaneouselement effectively eliminates the fault current transient overreachcomponents. When calculating BE1-50/51B-219/226 relay instantaneouselement settings, calculate the symmetrical value without any adder fortransient overreach.
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BE1-50/51B-219/226 - General Information 1-7
Figure 1-3. Instantaneous Characteristic Curves
TAD
M CBD KT N=
-+ +
Time Characteristics Nine inverse time functions and one fixed time function can be selected bya front panel switch. Characteristic curves for the inverse and definite timefunctions are defined by the following equation.
Where: TT = Time to trip in secondsD = TIME DIAL settingM = Multiple of PICKUP
A, B, C, N, K = Constants for the particular curve
Refer to Tables 1-3 or 1-4 for the time characteristic curve constants.Constants have been selected to conform to the characteristics ofelectromechanical relays over a range of pickup multiples from 1.3 to 40.Values of the constants are provided for use in computer relay settingprograms. Timing accuracy is ±1 cycle ±2% of time to trip.
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1-8 BE1-50/51B-219/226 - General Information
Time Characteristics The fixed time characteristic provides delays of 0.0 to 9.9 secondsContinued corresponding to the time dial setting. The time set is constant over a
range of pickup multiples from 1.0 to 40. Accuracy is ±1 cycle ±2% of timeto trip for time dial settings of 0.1 and greater.
Table 1-3. Time Characteristic Curve Constants With SW3-3 Open (OFF)
Curve Type Figure Constants
BE1 Similar To Number A B C N K R
S ABB CO-2 1-5 0.2663 0.03393 1.000 1.2969 0.028 0.500
L ABB CO-5 1-6 5.6143 2.18592 1.000 1.000 0.028 15.750
D ABB CO-6 1-7 0.4797 0.21359 1.000 1.5625 0.028 0.875
M ABB CO-7 1-8 0.3022 0.12840 1.000 0.5000 0.028 1.750
I ABB CO-8 1-9 8.9341 0.17966 1.000 2.0938 0.028 9.000
V ABB CO-9 1-10 5.4678 0.10814 1.000 2.0469 0.028 5.500
E ABB CO-11 1-11 7.7624 0.02758 1.000 2.0938 0.028 7.750
B BS142-B* 1-12 1.4636 0.00000 1.000 1.0469 0.028 3.250
C BS142-C* 1-13 8.2506 0.00000 1.000 2.0469 0.028 8.000
F None** None 0.0000 1.00000 0.000 0.0000 0.000 1.000
* Curves B and C are defined in British Standard BS142 and IEC 255-4 (InternationalElectrotechnical Commission)
** Fixed time from 0.1 to 9.9 seconds.
BE1 Curve Types:
S = Short Inverse V = Very InverseL = Long Inverse E = Extremely InverseD = Definite Time B = BS142 Very InverseM = Moderately Inverse C = BS142 Extremely InverseI = Inverse F = Fixed Time
Table 1-4. Time Characteristic Curve Constants With SW3-3 Closed (ON)
Curve Type Figure Constants
BE1 Similar To Number A B C N K R
S GE IAC 55 1-14 0.0286 0.0208 1.000 0.9844 0.028 0.0940
L GE IAC 66 1-15 2.3955 0.00002 1.000 0.3125 0.028 7.8001
D ABB CO-6 1-7 0.4797 0.21359 1.000 1.5625 0.028 0.8750
M ABB CO-7 1-8 0.3022 0.12840 1.000 0.5000 0.028 1.7500
I GE IAC 51 1-16 0.2747 0.1042 1.000 0.4375 0.028 0.8868
V GE IAC 53 1-17 4.4309 0.0991 1.000 1.9531 0.028 5.8231
E GE IAC 77 1-18 4.9883 0.0129 1.000 2.0469 0.028 4.7742
B BS142-B* 1-12 1.4636 0.00000 1.000 1.0469 0.028 3.2500
C BS142-C* 1-13 8.2506 0.00000 1.000 2.0469 0.028 8.0000
F None** None 0.0000 1.00000 0.000 0.0000 0.000 1.0000
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BE1-50/51B-219/226 - General Information 1-9
( )T Time To ResetRD
M 1R 2=-
TRD
M 1Time To ResetR 2=
-=
TAD
M CBD KT N=
-+ +
Integrating Time Reset Reset begins when the current drops below 95% of pickup. IntegratingCharacteristic reset simulates the disk reset of electromechanical relays. BE1-50/51B-
219/226 relays provide the integrating reset function even when inputcurrent falls to zero.
Integrating reset characteristics are defined by the following equation andshown in Figure 1-4. Equation constants are provided in Tables 1-3 or 1-4.
Where: R = Constant for the particular curveD = TIME DIAL settingM = Multiple of PICKUP
Time characteristic curve equation.
Where: D = TIME DIAL settingM = Multiple of PICKUP
Reset characteristic curve equation.
Instantaneous Time Reset Resets within 16 milliseconds when current drops below pickup.Characteristic
Target Indicators Magnetically latched, manually reset targets indicate that current of 0.2amperes or greater was present in the trip circuit. Target coil resistance isless than 0.1 ohms and operate time is less than one millisecond. See50/51 Output specifications for maximum current rating.
50/51 Output Output contacts are surge protected and rated as follows:
Resistive:120/240 Vac Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3
amperes continuously, and break 5 amperes.
125/250 Vdc Make 30 amperes for 0.2 seconds, carry 7 amperes for 2 minutes, 3amperes continuously, and break 0.3 ampere.
Inductive:120/240 Vac, Make and carry 30 amperes for 0.2 seconds, carry 7 amperes for 2 125/250 Vdc minutes, 3 amperes continuously, and break 0.3 ampere. (L/R = 0.04).
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1-10 BE1-50/51B-219/226 - General Information
1.0
10.0
100.0
0.000 0.200 0.400 0.600 0.800 1.000
Multiple of Pickup
xRD
(S
econ
ds)
Isolation Meets IEC 255-5 and exceeds IEEE C37.90-1989, one-minute dielectric(high potential) tests as follows:
All circuits to ground: 2828 VdcInput to output circuits: 2000 Vac or 2828 Vdc
This chart vertical axis xRD (Seconds) is applicable for all curves and is derived frommultiplying the constant R for the curve selected times D (the TIME DIAL setting).
Figure 1-4. Integrating Reset Characteristic Curve
Surge Withstand CapabilityOscillatory Qualified to IEEE C37.90.1-1989 5VCPFCTF 5WTIG 9KVJUVCPF
%CRCDKNKV[ 59%� 6GUVU HQT 2TQVGEVKXG 4GNC[U CPF 4GNC[ 5[UVGOU�
Fast Transient Qualified to IEEE C37.90.1-1989 Standard Surge WithstandCapability (SWC) Tests for Protective Relays and Relay
Fast Transient Qualified to IEEE C37.90.1-1989.
Impulse Test Qualified to IEC 255-5.
Radio Frequency Field tested using a five watt, hand-held transceiver operating at random Interference (RFI) frequencies centered around 144 megahertz and 440 megahertz, with the
antenna located six inches from the relay in both horizontal and verticalplanes.
Patent Patented in U.S., 1998, U.S. Patent No. 5751532.
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BE1-50/51B-219/226 - General Information 1-11
Temperature Operating Range-40(C (-40(F) to 70(C (158(F)
Recommended Storage Range-50(C (-58(F) to 50(C (122(F).
Shock 15 g in each of three mutually perpendicular planes.
Vibration 2 g in each of three mutually perpendicular planes swept over the range of10 to 500 hertz for a total of six sweeps, 15 minutes each sweep.
Case Size S1.
Weight 6.1 pounds.
CHARACTERISTIC CURVESFigures 1-5 through 1-18 illustrate the characteristic curves that are programmed into the nonvolatilememory of this relay. To order full-size drawings of these characteristic curves, contact the CustomerService Department of the Power Systems Group, Basler Electric, and request publication 9 2520 00 999.This publication contains fourteen full size characteristic curves on transparent paper (vellum).
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1-12 BE1-50/51B-219/226 - General Information
MULTIPLES OF PICK-UP
Figure 1-5. Time Characteristic Curve, 99-1369, S-Short Inverse (SW3-3 OFF, Similar to ABB CO-2)
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BE1-50/51B-219/226 - General Information 1-13
MULTIPLES OF PICK-UP
Figure 1-6. Time Characteristic Curve, 99-1370, L-Long Inverse (SW3-3 OFF, Similar to ABB CO-5)
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1-14 BE1-50/51B-219/226 - General Information
MULTIPLES OF PICK-UP
Figure 1-7. Time Characteristic Curve, 99-1371, D-Definite Time (Similar to ABB CO-6)
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BE1-50/51B-219/226 - General Information 1-15
MULTIPLES OF PICK-UP
Figure 1-8. Time Characteristic Curve, 99-1372, M-Moderately Inverse (Similar to ABB CO-7)
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1-16 BE1-50/51B-219/226 - General Information
MULTIPLES OF PICK-UP
Figure 1-9. Time Characteristic Curve, 99-1373, I-Inverse (SW3-3 OFF, Similar to ABB CO-8)
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BE1-50/51B-219/226 - General Information 1-17
MULTIPLES OF PICK-UP
Figure 1-10. Time Characteristic Curve, 99-1374, V-Very Inverse (SW3-3 OFF, Similar to ABB CO-9)
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1-18 BE1-50/51B-219/226 - General Information
MULTIPLES OF PICK-UP
Figure 1-11. Time Characteristic Curve, 99-1375, E-Extremely Inverse(SW3-3 OFF, Similar to ABB CO-11)
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BE1-50/51B-219/226 - General Information 1-19
MULTIPLES OF PICK-UP
Figure 1-12. Time Characteristic Curve, 99-1376, BS142-B (BS142 Very Inverse)
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1-20 BE1-50/51B-219/226 - General Information
MULTIPLES OF PICK-UP
Figure 1-13. Time Characteristic Curve, 99-1377, BS142-C (BS142 Extremely Inverse)
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BE1-50/51B-219/226 - General Information 1-21
Figure 1-14. Time Characteristic Curve, 99-1595, S2-Short Inverse (SW3-3 ON, Similar to GE IAC 55)
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1-22 BE1-50/51B-219/226 - General Information
Figure 1-15. Time Characteristic Curve, 99-1594, L2-Long Inverse (SW3-3 ON, Similar To GE IAC 66)
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BE1-50/51B-219/226 - General Information 1-23
Figure 1-16. Time Characteristic Curve, 99-1597, I2-Inverse (SW3-3 ON, Similar To GE IAC 51)
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1-24 BE1-50/51B-219/226 - General Information
Figure 1-17. Time Characteristic Curve, 99-1596, V2-Very Inverse (SW3-3 ON, Similar To GE IAC 53)
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BE1-50/51B-219/226 - General Information 1-25
Figure 1-18. Time Characteristic Curve, 99-1598, E2-Extremely Inverse(SW3-3 ON, Similar To GE IAC 77)
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BE1-50/51B-219/226 Human-Machine Interface 2-1
SECTION 2 • HUMAN-MACHINE INTERFACE(CONTROLS AND INDICATORS)GENERAL
Table 2-1 lists and briefly describes the BE1-50/51B-219 and BE1-50/51B-226 controls and indicators.Reference the callouts to Figures 2-1, 2-2 , and 2-3.
Table 2-1. BE1-50/51B-219/226 Controls and Indicators
Locator Control or Indicator Function
A INST MANUAL TRIP TestPoints
When shorted, the test points (jacks) provide a securemeans to manually trip the controlled breaker. Jacksaccept a standard 0.080 inch diameter phone tip plug.
Figure 2-1. Location of Controls and Indicators
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2-2 BE1-50/51B-219/226 Human-Machine Interface
Table 2-1. BE1-50/51B-219/226 Controls and Indicators - Continued
Locator Control or Indicator Function
B INST PICKUP Selectors Two switches (TENS and UNITS in five ampere units andCOARSE and FINE in one ampere units) to select pickupcurrent in amperes. Changing switch selectors while therelay is in service may cause tripping.
C Targets Black target indicators trip to red and magnetically latchwhen the trip circuit current is greater than 0.2 amperes.One target each for TIME and INST.
D TIME PICKUP Selectors Two switches (UNITS and TENTHS in five ampere unitsand COARSE and FINE in one ampere units) to selectpickup current in amperes. Changing switch selectorswhile the relay is in service may cause tripping.
E CURVE Selector Ten position selector switch to select one of nine inversefunctions or one fixed time function.
F TIME DIAL Selectors Two selector switches (UNITS and TENTHS) to select thedesired characteristic curve. A setting of 0.0 results ininstantaneous operation without any intentional delay. Asetting of 9.9 corresponds to the typical time provided byan electromechanical relay at its maximum dial setting.
G TIME MANUAL TRIP TestPoints
When shorted, the test points provide a secure means tomanually trip the controlled breaker. Jacks accept astandard 0.080 inch diameter phone tip plug.
H ACTIVE/PICKUP LED Red LED indicates sensed current has exceeded the TIMEPICKUP setting. LED turns from red to green when sensedcurrent falls below 95 % of pickup setting. When the LEDis green, the relay is active but has not picked up.
I Target Reset Lever Linkage extends through back of front cover to reset bothmagnetically latched target indicators.
J SW3 -1 SW3-1 selects the system operating frequency. SW3-1open (OFF) selects 60 hertz operation. SW3-1 closed(ON) selects 50 hertz operation.
SW3-2
SW3-3
SW3-4
SW3-2 provides additional time delay for the instantaneouselement. Closing switch SW3-2 (ON) provides anadditional instantaneous delay of 0.1 second.
SW3-3 provides selection of GE IAC type curves or ABBtype curves. Closing switch SW3-3 (ON) selects GE IACtype curves (refer to Table 1-3). Opening switch SW3-3(OFF) selects ABB type curves (refer to Table 1-2).
SW3-4 provides selection of either instantaneous orintegrating reset characteristics. Closing SW3-4 (ON)selects integrating reset characteristics. Opening SW3-4(OFF) selects instantaneous reset characteristics.
Note: SW3 was previously labeled SW8 on previousrevisions of the following units.BE1-50/51B-219: Unit revisions F and previous.BE1-50/51B-226: Unit revisions I and previous.
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BE1-50/51B-219/226 Human-Machine Interface 2-3
Figure 2-2. Location of Controls and Indicators
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2-4 BE1-50/51B-219/226 Human-Machine Interface
Figure 2-3. Location of Controls and Indicators
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BE1-50/51B-219/226 - Functional Description 3-1
SECTION 3 • FUNCTIONAL DESCRIPTION
GENERAL
BE1-50/51B-219/226 Overcurrent Relays are microprocessor based non-directional relays that measure accurrent to provide secure and reliable instantaneous and time overcurrent protection for power systems.
FUNCTIONAL DESCRIPTION
Sensing Input
Single phase ac current from system current transformers (CT) is brought into the BE1-50/51B-219/226Overcurrent Relay at terminals five and six. Refer to Figure 3-1 to follow the functional description. Theinput current is applied to internal power and signal CTs.
Power Supply
Current from the power CT is rectified, filtered, and supplied to all relay internal circuitry for operating power.A precision +5 Vdc supply also serves as a reference for automatic calibration.
Instantaneous Signal
Current from the signal CT is rectified and applied to the instantaneous scaling resistors controlled by theINST PICKUP selector switches. The analog voltage of the instantaneous input signal developed acrossthe scaling resistors is filtered and applied to the multiplexor (MUX).
Time Signal
Current from the signal CT is also rectified and applied to the time scaling resistors controlled by the TIMEPICKUP selector switches. The analog voltage of the time input signal is also filtered and applied to themultiplexor.
Microprocessor
Operating power from the power supply is applied to the microprocessor supervisor circuit. When themicroprocessor is active and executing code, the ACTIVE/PICKUP LED is green. When the input currentfalls below an acceptable level, the supervisor circuit interrupts the microprocessor, halts further operation,and turns OFF the ACTIVE/PICKUP LED. A microprocessor watchdog feature resets the microprocessorprogram when the program flow is interrupted.
Information from the TIME DIAL selector switches, the TIME CURVE selector switch, and the 50/60 Hz, INSTDELAY, and RESET CHAR switches is also applied to the microprocessor. The microprocessor uses theseinputs to set the operating parameters.
When the microprocessor is ready for analog information from the multiplexor, microprocessor controlsignals cause the multiplexor to route the desired input through to the output. The output is converted froman analog value to a digital value and applied to the microprocessor.
The microprocessor performs the program operations based on the inputs and the internal softwareprogram. When the sensed current exceeds the TIME PICKUP setting, the ACTIVE/PICKUP LED turns fromgreen to red. TIME contacts (51) are closed in accordance with the time characteristic equation. If thesensed current exceeds the INST PICKUP setting, the INST contacts (50) are closed.
Power-Off Sensing
Power-off sensing circuits measure the voltage across a capacitor at power-down and at power-up. Thesecircuits determine how long power has been removed based on the difference voltage and the circuit RCtime constant. This provides information for the integrating reset function even when power has beenentirely removed.
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3-2 BE1-50/51B-219/226 - Functional Description
CAUTIONTrip circuit voltage is present at the front panel test points. When shorting the testpoints, use insulated jumpers to avoid contact with these voltages.
Outputs
Instantaneous And Timed
System circuit breakers controlled by the output contacts can be manually tripped by applying a short acrossthe TIME or INST MANUAL TRIP front panel test points. Targets will not be pulled for a manual trip if therelay is de-energized. Current flow in the trip circuit is indicated by the operation of the target. The targetswill not operate without adequate operating power for the relay.
Figure 3-1. Functional Block Diagram
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BE1-50/51B-219/226 - Installation 4-1
SECTION 4 • INSTALLATION
GENERAL
When not shipped as part of a control or switchgear panel, the relays are shipped in sturdy cartons to preventdamage during transit. Immediately upon receipt of a relay, check the model and part number against therequisition and packing list to see that they agree. Visually inspect the relay for damage that may have occurredduring shipment. If there is evidence of damage, immediately file a claim with the carrier and notify the RegionalSales Office, or contact the Sales Representative at Basler Electric, Highland, Illinois.
Proper operation of the relay may be confirmed by performing the operational test procedure (Section 5). In theevent the relay is not to be installed immediately, store the relay in its original shipping carton in a moisture anddust free environment.
DIELECTRIC TEST
In accordance with IEC 255-5 and IEEE C37.90-1989, one-minute dielectric (high potential) tests may beperformed as shown in the following paragraphs. Output contacts are surge protected.
All circuits to ground: 2828 VdcInput to output circuits: 2000 Vac or 2828 Vdc
MOUNTING
Because the relay is of solid state design, it does not have to be mounted vertically. Any convenient mountingangle may be chosen.
FACTORY SETTINGSFactory settings for the internal switches of SW3 are as follows:
& SW3-1 — OFF (60 hertz operation).& SW3-2 — OFF (0.0 additional fixed delay for the instantaneous element).& SW3-3 — ON (Westinghouse/ABB type characteristic curves).& SW3-4 — ON (Integrating reset characteristics).
INSTALLATION
Select the desired relay settings before putting the relay into service. Changing pickup current settings whilethe relay is in service may cause tripping. Perform the following procedures to install the BE1-50/51B-219/226relay.
& Select the desired relay settings on your new BE1-50/51B-219/226 relay.& Remove the existing ABB relay cradle.& Insert the new BE1-50/51B-219/226 relay cradle and close the cradle latches locking the relay into the
case.
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4-2 BE1-50/51B-219/226 - Installation
CAUTIONClose all BLACK handle switches before closing any RED handle switches.Insure that the RED handle switches are closed last.
TTrip �AD
M N�C
�BD�K
�7.7624×2
102.0938�1
� (0.02758×2) � 0.028
�15.5248
124.10806�1� (0.05516) � 0.028
� 0.209 seconds
TReset �RD
M 2�1
�7.75×2
02�1
� �15.5 seconds
& Close knife-blade switches.& To install the new cover, position the interlocking bracket at the top of the cover into the mating
receptacle at the top of the case. Close the cover and secure the captive thumb nut fastener at thebottom of the cover.
APPLICATION COORDINATION
In a typical application coordination scheme, a BE1-50/51B-219/226 is being used to provide primary protectionfor a radial distribution feeder. An electromechanical overcurrent relay with extremely inverse timing providesprotection for the transformer and bus. To improve coordination with the electromechanical relay, the BE1 relaywith integrating reset characteristic has the time characteristic curve E (extremely inverse) selected (SW3-3 setto OFF) and the TIME DIAL set to 2.0. The feeder reclosing relay is set for two reclose attempts at 3 and 15seconds after the initial trip. If a permanent fault occurs (magnitude ten times pickup), calculate the feederbreaker trip time for each of the three operations. Refer to Section 1 for characteristic curve constants.
From the time characteristic curve equation.
From the reset characteristic curve equation.
M = 0 if current goes to zero.Negative result indicates reset time.
Results: Full trip = 0.209 seconds and full reset = 15.5 seconds if current goes to zero.
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BE1-50/51B-219/226 - Installation 4-3
Figure 4-1. Coordination Timing Diagram
TTrip This Occurance �(Full Trip)(Rewind Time)
Full Rewind
TB �(0.209)(3)
15.5
TB � 0.040 seconds
TC �(0.209)(11.96)
15.5
TC � 0.161 seconds
In Figure 4-1,
TA = 0.209 seconds (relay was at reset).TB = value < TA because rewind has not gone to zero.TC = value < TA because rewind has not gone to zero.
Equation for time to trip during rewind (before relay is reset).
Second Operation
Third Operation
CONNECTIONS
Typical ac input and dc control connections are shown in Figures 4-2 and 4-3. Refer to Section 3, block diagramfor relay internal connections.
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4-4 BE1-50/51B-219/226 - Installation
Figure 4-2. AC Input Connections
Figure 4-3. DC Control Connections
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BE1-50/51B-219/226 - Testing 5-1
CAUTIONTo ensure proper timing during testing, before each test, remove the current from theunit for R times D seconds (refer to Section 1, Specifications, Time Reset for R and Ddefinitions).
SECTION 5 • TESTING
GENERAL
When not shipped as part of a control or switchgear panel, the relays are shipped in sturdy cartons toprevent damage during transit. Immediately upon receipt of a relay, check the model and part numberagainst the requisition and packing list to see that they agree. Visually inspect the relay for damage that mayhave occurred during shipment. If there is evidence of damage, immediately file a claim with the carrier andnotify the Regional Sales Office, or contact the Sales Representative at Basler Electric, Highland, Illinois.
Proper operation of the relay may be confirmed by performing the operational test procedures in this Section.In the event the relay is not to be installed immediately, store the relay in its original shipping carton in amoisture and dust free environment.
DIELECTRIC TEST
In accordance with IEC 255-5 and IEEE C37.90-1989, one-minute dielectric (high potential) tests may beperformed as follows:
All circuits to ground: 2828 Vdc.Input to output circuits: 2000 Vac or 2828 Vdc.
Output contacts are surge protected.
OPERATIONAL TEST PROCEDURE
The following procedure verifies operation of the relay. The test setup of Figures 5-1 and 5-2 are intendedprimarily as an illustration of the principles involved. Other test setups known to be capable of testing withthe stated and implied tolerances (including equipment specifically designed for testing relays) may be used.
Test Equipment Required
& Current source with a range from 0 to 20 amperes ac (sensing input current).& Current source 0.2 to 3 amperes ac (target operation).& Timer or counter.
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5-2 BE1-50/51B-219/226 - Testing
1.0 AacC U R R E N T
LIMITER
T A R G E T C U R R E N T
BE1-50/51B-219
8 9 1 2
T IME INST
10
C U R R E N TS O U R C E
INPUTS T O P TIMER
S T A R T
A M P S
TEST SET
12-13-99D2354-20
Figure 5-1. Pickup and Timing Test Setup
Figure 5-2. Target Operational Test Setup
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BE1-50/51B-219/226 - Testing 5-3
NOTEWhen testing TIME overcurrent functions, INST PICKUP settings of 00 will affect thecalibration of the TIME functions. TIME PICKUP settings of 00 also affect INSTfunctions.
Test Procedure, Model BE1-50/51B-219 (Five Ampere Sensing Input)
Time Pickup Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-1.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), SW3-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 0.0.& Set CURVE to S.& Set TIME PICKUP to 0.5.& Set INST PICKUP to 90.
Step 1. Slowly increase current to terminals 8 and 9. ACTIVE/PICKUP LED should turn RED at a maximuminput current of 0.550 ampere.
Step 2. Decrease input current until ACTIVE/PICKUP LED turns GREEN then OFF.
Step 3. Set TIME PICKUP to 2.2.
Step 4. Slowly increase current to terminals 5 and 6. ACTIVE/PICKUP LED should change from GREENto RED at an input current of 2.131 to 2.269 amperes.
Step 5. Decrease input current until ACTIVE/PICKUP LED turns OFF.
INST Pickup Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-1.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 0.0.& Set CURVE to S.& Set TIME PICKUP to 15.1.& Set INST PICKUP to 01.
Step 1. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of0.955 to 1.045 amperes.
Step 2. Decrease input current until INST output contacts open.
Step 3. Set INST PICKUP to 08.
Step 4. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of7.815 to 8.185 amperes.
Step 5. Decrease input current until INST output contacts open.
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5-4 BE1-50/51B-219/226 - Testing
Time Dial Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-1.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 4.5.& Set CURVE to S.& Set TIME PICKUP to 1.0.& Set INST PICKUP to 90.
Step 1. Prepare to apply 1.5 amperes input current to terminals 8 and 9 and record the elapsed time fromwhen current is applied until TIME output contacts close.
Step 2. Apply the current (step from 0 to 1.5 amperes) and record the elapsed time. Elapsed time shouldbe 1.754 to 2.084 seconds. (This tolerance is greater than ±2 % because it is the accumulation ofboth pickup and timing tolerances.)
Step 3. Remove input current.
Target Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-2.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 4.5.& Set CURVE to S.& Set TIME PICKUP to 1.0.& Set INST PICKUP to 01.
Step 1. Set target current source to 1.0 ampere, ac.
Step 2. Apply 5 amperes input current to terminals 8 and 9. Check that both TIME and INST targetsoperate.
Step 3. Remove input current and reset targets.
Manual Trip Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-2.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 4.5.& Set CURVE to S.& Set TIME PICKUP to 1.0.& Set INST PICKUP to 01.
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BE1-50/51B-219/226 - Testing 5-5
CAUTIONTrip circuit voltage is present at the front panel test points. When shorting the testpoints, use insulated jumpers to avoid contact with these voltages.
Step 1. Set target current source to 1.0 ampere, ac.
Step 2. Apply 0.9 ampere input current to terminals 8 and 9. (0.9 ampere provides input power but staysbelow pickup.)
Step 3. Connect a jumper between TIME MANUAL TRIP test points. Check that TIME target operates.
Step 4. Connect a jumper between INST MANUAL TRIP test points. Check that INST target operates.
Step 5. Reset targets.
Integrating Reset Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-1.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to ON selects integratingreset).
& Set TIME DIAL to 4.5.& Set CURVE to I.& Set TIME PICKUP to 1.0.& Set INST PICKUP to 90.
Step 1. Set target current source to 1.0 ampere, ac.
Step 2. Read all of Step 3 before beginning Step 3.
Step 3. Apply 4.0 amperes input current to terminals 8 and 9. After the unit trips, remove the input currentfor 20 ±0.25 seconds, then reapply the 4.0 amperes input current. Record the elapsed time fromthe reapplication of input current to the output retrip.
Result: Elapsed time should be 1.55 ±0.3 seconds.
Test Procedure, Model BE1-50/51B-226 (One Ampere Sensing Input)
Time Pickup Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-1.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), SW3-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 0.0.& Set CURVE to S.& Set TIME PICKUP to 0.1.& Set INST PICKUP to 18.0
Step 1. Slowly increase current to terminals 8 and 9. ACTIVE/PICKUP LED should turn RED at a maximuminput current of 0.110 ampere.
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5-6 BE1-50/51B-219/226 - Testing
Step 2. Decrease input current until ACTIVE/PICKUP LED turns GREEN then OFF.
Step 3. Set TIME PICKUP to 0.44.
Step 4. Slowly increase current to terminals 5 and 6. ACTIVE/PICKUP LED should change from GREENto RED at an input current of 0.426 to 0.454 amperes.
Step 5. Decrease input current until ACTIVE/PICKUP LED turns OFF.
INST Pickup Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-1.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 0.0.& Set CURVE to S.& Set TIME PICKUP to 3.02.& Set INST PICKUP to 0.2.
Step 1. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of0.191 to 0.209 amperes.
Step 2. Decrease input current until INST output contacts open.
Step 3. Set INST PICKUP to 08.
Step 4. Slowly increase current to terminals 8 and 9. INST contacts should close at an input current of1.563 to 1.637 amperes.
Step 5. Decrease input current until INST output contacts open.
Time Dial Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-1.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 4.5.& Set CURVE to S.& Set TIME PICKUP to 0.2.& Set INST PICKUP to 18.0.
Step 1. Prepare to apply 0.3 amperes input current to terminals 8 and 9 and record the elapsed time fromwhen current is applied until TIME output contacts close.
Step 2. Apply the current (step from 0 to 0.3 amperes) and record the elapsed time. Elapsed time shouldbe 1.754 to 2.084 seconds. (This tolerance is greater than ±2 % because it is the accumulation ofboth pickup and timing tolerances.)
Step 3. Remove input current.
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BE1-50/51B-219/226 - Testing 5-7
CAUTIONTrip circuit voltage is present at the front panel test points. When shorting the testpoints, use insulated jumpers to avoid contact with these voltages.
Target Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-2.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 4.5.& Set CURVE to S.& Set TIME PICKUP to 0.2.& Set INST PICKUP to 0.2
Step 1. Set target current source to 1.0 ampere, ac.
Step 2. Apply 1 ampere input current to terminals 8 and 9. Check that both TIME and INST targets operate.
Step 3. Remove input current and reset targets.
Manual Trip Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-2.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to OFF (selectsinstantaneous reset).
& Set TIME DIAL to 4.5.& Set CURVE to S.& Set TIME PICKUP to 0.2.& Set INST PICKUP to 0.2.
Step 1. Set target current source to 1.0 ampere, ac.
Step 2. Apply 0.15 ampere input current to terminals 8 and 9. (0.15 ampere provides input power but staysbelow pickup.)
Step 3. Connect a jumper between TIME MANUAL TRIP test points. Check that TIME target operates.
Step 4. Connect a jumper between INST MANUAL TRIP test points. Check that INST target operates.
Step 5. Reset targets.
Integrating Reset Test
Perform preliminary setup:
& Connect test setup as shown in Figure 5-1.& Insure that SW3 switches are set correctly: SW3-1 for operating frequency, SW3-2 to OFF (no
instantaneous delay), 8-3 to OFF (ABB type curves selected), and SW3-4 to ON selects integratingreset).
& Set TIME DIAL to 4.5.
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5-8 BE1-50/51B-219/226 - Testing
& Set CURVE to I.& Set TIME PICKUP to 0.20.& Set INST PICKUP to 18.0.
Step 1. Set target current source to 1.0 ampere, ac.
Step 2. Read all of Step 3 before beginning Step 3.
Step 3. Apply 0.8 amperes input current to terminals 8 and 9. After the unit trips, remove the input currentfor 20 ±0.25 seconds, then reapply the 0.8 amperes input current. Record the elapsed time fromthe reapplication of input current to the output retrip.
Result: Elapsed time should be 1.55 ±0.3 seconds.
SETTING THE RELAY
Select the desired relay settings before putting the relay into service. Changing pickup current settings whilethe relay is in service may cause tripping.
PERIODIC TESTS
General
All relays should be tested periodically to identify and correct any problems that are found.
Single phase relays such as the BE1-50/51B-219/226 are normally used in groups of four (three phase andground) on the protected circuit. This relay scheme allows each unit to be withdrawn one at a time fortesting purposes without losing protection. Only three are required at any one time to sense all types offaults on a grounded wye system. Refer to Figures 5-1 and 5-2 for recommended test setups.
Periodic Test
Periodic testing should consist of the following procedures.
Step 1. Verify that the instantaneous pickup is within ±2% of the value set on the dials. Pickup occurs whenthe INST output contacts close.
Step 2. Verify that the time pickup is within ±2% of the value set on the dials. Pickup occurs when the LEDchanges from GREEN to RED.
Step 3. Verify that the time to trip for the curve and time dial settings at a multiple of six is the same as thetime given on the characteristic curve. Refer to Section 1 for the characteristics curves.
Step 4. Verify that the time to trip for the instantaneous element at a pickup multiple of 2 is not greater thanthe time given on the instantaneous characteristic curve. Refer to Section 1 for the instantaneouscharacteristic curve.
Step 5. Verify that the targets operate with one ac ampere of trip current in the trip circuits and that they canbe reset using the RESET LEVER.
This completes the periodic test.
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BE1-50/51B-219/226 - Maintenance 6-1
CAUTIONSubstitution of printed circuit boards or individual components does not necessarilymean the relay will operate properly. Always test the relay before placing it in operation.
SECTION 6 • MAINTENANCE
GENERAL
BE1-50/51B-219/226 Overcurrent Relays require no preventive maintenance. However, periodic checks shouldbe performed according to scheduled practices. A recommended periodic test is provided in this section. If therelay fails to function properly and in-house repair is considered, contact the Customer Service Department ofthe Power Systems Group, Basler Electric, for a return authorization number prior to shipping.
IN-HOUSE REPAIR
In-house replacement of individual components should be performed by qualified technicians.
When complete boards or assemblies are needed, the following information is required.
1. Relay model number2. Relay serial number
STORAGE
This protective relay contains long life aluminum electrolytic capacitors. Life in excess of 20 years may beexpected if the storage temperature does not exceed 40(C (72(F).
PERIODIC TESTS
General
All relays should be tested periodically to identify and correct any problems that are found.
Single phase relays such as the BE1-50/51B-219/226 are normally used in groups of four (three phase andground) on the protected circuit. Only three are required at any one time to provide complete protection. Thefourth one assures that protection is maintained even if one relay failed.
This protection scheme also allows one unit at a time to be withdrawn from service for testing purposes withoutlosing protection during the test. Refer to Section 5 for recommended test setups.
Periodic Test
Periodic testing should consist of the following procedures.
Step 1. Verify that the instantaneous pickup is within ±2% of the value set on the dials. Pickup occurs when theINST output contacts close.
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6-2 BE1-50/51B-219/226 - Maintenance
Step 2. Verify that the time pickup is within ±2% of the value set on the dials. Pickup occurs when the LEDchanges from GREEN to RED
Step 3. Verify that the time to trip for the curve and time dial settings at a multiple of six is the same as the timegiven on the characteristic curve. Refer to Section 1 for the characteristics curves.
Step 4. Verify that the time to trip for the instantaneous element at a pickup multiple of 2 is not greater than thetime given on the instantaneous characteristic curve. Refer to Section 1 for the instantaneouscharacteristic curve.
Step 5. Verify that the targets operate with one ac ampere of trip current in the trip circuits and that they can bereset using the RESET LEVER.
This completes the periodic test.
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BE1-50/51B-219/226 - Manual Change Information 7-1
SECTION 7 • MANUAL CHANGE INFORMATION
SUMMARY AND CROSS REFERENCE GUIDE
This section contains information concerning the previous editions of the manual. The substantive changes todate are summarized in Table 7-1.
Table 7-1. Changes
Revision Summary of Changes ECA/ECO Date
A Added Patent number to Specifications. Changed manual format toreflect the current style and added Section 7.
16780/05-27-98
B Corrected Figures 3-1, 4-2, 4-3, 5-1, and 5-2. Changed all references tothe current for testing the targets to an ac only type of current.
7389/12-13-99
C Added BE1-50/51B-226, one ampere sensing input data throughout themanual, and corrected switch values in Table 2-1.
10921/10-02-00
D Updated drawings in Section 2 to reflect changes to the PC board. Updated drawings to reflect changes to the overlay. Also updated therest of the manual to reflect the change in switch call out from SW8 toSW3. Added new functionality to the PICKUP LED. It is now theACTIVE/PICKUP LED and will be green when active and red whenpicked up.
11617/12-06-00
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